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由于接下来的实验要实现火柴人的动作，所以实验要求要采用分层设计，如下图所示：

这样转动hip（臀部），整个火柴人就整体转动。比如如果要动左腿，那么在相对hip上进行自己的操作，这样设计对火柴人的动作实现很方便。

贴上自己的代码，程序用递归来实现分层设计，此外还增添了火柴人旋转功能：

#define _STDCALL_SUPPORTED#include 
   
    GLUquadricObj   *uquadric;  //二次曲面声明类型void drawTorso();void drawLeftleg1();void drawRightleg1();void drawLeftarm1();void drawLefttarm2();void drawRightarm1();void drawRightarm2();void drawNeck();void drawHead();void selfRotateRL1();//画臀部，根节点void drawHip(){    glScalef(2.0,0.5,1.0);    glPushMatrix();    glTranslatef(0.0,-1.0,0.0);    glutWireCube(0.3);    drawTorso();    drawLeftleg1();    drawRightleg1();    glPopMatrix();}//画肩膀void drawShoulder(){    glScalef(2.0,0.5,2.0);  //先还原成1:1    glScalef(2.0,0.5,1.0);    glPushMatrix();    glTranslatef(0.0,1.45,0.0);    glutWireCube(0.4);    drawRightarm1();    drawLeftarm1();    drawNeck();    drawHead();    glPopMatrix();}//画躯干void drawTorso(){    glScalef(0.5,2.0,1.0);  //先还原成1:1    glScalef(0.5,2.0,0.5);  //躯干Z轴方向缩短一半，不然躯干太粗    glPushMatrix();    glTranslatef(0.0,0.35,0.0);    glutWireCube(0.6);    drawShoulder();    glPopMatrix();}void drawRightarm2(){    glPushMatrix();    //差点忘记了，arm1是绕x轴旋转了90度，所以三维坐标也跟着旋转了90度    //这里第二个是“z轴”，负的往里，正的往外    //第三个是“y轴”，负的网上，正的往下    glTranslatef(0.0,0.0,0.7);    glRotatef(15,0.0,-1.0,0.0);    gluCylinder(uquadric, 0.08, 0.08, 0.6, 20.0, 8.0);    glPopMatrix();}void drawRightarm1(){    glScalef(0.5,2.0,1.0);  //还原成1:1    glPushMatrix();    //gluQuadricDrawStyle(uquadric, GLU_FILL);  //控制绘图风格    glTranslatef(-0.3,-0.05,0.0);    glRotatef(90,1.0,0.0,0.0);    gluCylinder(uquadric, 0.08, 0.08, 0.7, 20.0, 8.0);    drawRightarm2();    glPopMatrix();}void drawLeftarm2(){    glPushMatrix();    glTranslatef(0.0,0.0,0.7);    glRotatef(15,0.0,1.0,0.0);    gluCylinder(uquadric, 0.08, 0.08, 0.6, 20.0, 8.0);    glPopMatrix();}void drawLeftarm1(){    glPushMatrix();    glTranslatef(0.3,-0.05,0.0);    glRotatef(90,1.0,0.0,0.0);    gluCylinder(uquadric, 0.08, 0.08, 0.7, 20.0, 8.0);    drawLeftarm2();    glPopMatrix();}//画头void drawHead(){    glPushMatrix();    glTranslatef(0.0,0.65,0.0);    glutWireCube(0.40);    glPopMatrix();}//画脖子void drawNeck(){    glPushMatrix();    glTranslatef(0.0,0.40,0.0);    glRotatef(90,1.0,0.0,0.0);    gluCylinder(uquadric, 0.10, 0.10, 0.30, 20.0, 8.0);    glPopMatrix();}void drawRightLeg2(){    glPushMatrix();    glTranslatef(0.0,0.0,0.8);    //glRotatef(10,0.0,-1.0,0.0);    gluCylinder(uquadric, 0.1, 0.1, 0.8, 20.0, 8.0);    glPopMatrix();}void drawRightleg1(){    //glScalef(2.0,0.5,1.0);  //先还原成1:1    glPushMatrix();    glTranslatef(0.20,-0.05,0.0);    //注意这里坐标轴绕x旋转了90度，leg2的坐标会变化    glRotatef(90,1.0,0.0,0.0);    gluCylinder(uquadric, 0.1, 0.1, 0.8, 20.0, 8.0);    drawRightLeg2();    glPopMatrix();}void drawLeftLeg2(){    glPushMatrix();    glTranslatef(0.0,0.0,0.8);    //glRotatef(10,0.0,-1.0,0.0);    gluCylinder(uquadric, 0.1, 0.1, 0.8, 20.0, 8.0);    glPopMatrix();}void drawLeftleg1(){    glScalef(2.0,0.5,1.0);  //先还原成1:1    glPushMatrix();    glTranslatef(-0.20,-0.05,0.0);    //注意这里坐标轴绕x旋转了90度，leg2的坐标会变化    glRotatef(90,1.0,0.0,0.0);    gluCylinder(uquadric, 0.1, 0.1, 0.8, 20.0, 8.0);    drawLeftLeg2();    glPopMatrix();}static float rotateAngle = 0;static int times1 = 0;void selfRotateWhole(){    times1++;    if(times1 > 50)    {        times1 = 0;    }    if(times1 % 50 == 0)    {        rotateAngle += 0.5;    }    glRotatef(rotateAngle, 0, 1, 0);    glRotatef(rotateAngle, 1, 0, 0);}//自由旋转转动void renderScene(){    glClear(GL_COLOR_BUFFER_BIT); //清除当前可写的颜色缓冲    glColor3f(1.0,0.0,0.0);	glLoadIdentity();    gluLookAt(0.0,0.0,0.0,0.0,0.0,-1.0,0.0,1.0,0.0);    glLoadIdentity();    /*    glMatrixMode设置当前矩阵模式:    GL_MODELVIEW,对模型视景矩阵堆栈应用随后的矩阵操作.    GL_PROJECTION,对投影矩阵应用随后的矩阵操作.    GL_TEXTURE,对纹理矩阵堆栈应用随后的矩阵操作.    与glLoadIdentity()一同使用    */    glMatrixMode(GL_MODELVIEW);    glScalef(0.5,0.5,1.0); //先缩放下，不然木头人会很大。。。    glPushMatrix();    selfRotateWhole();    drawHip();    glPopMatrix();    glFlush();    //glutSwapBuffers();}void init(){    glClearColor(0.0,0.0,0.0,0.0); //glClearColor(R,G,B,AFA)清空当前颜色，并且设定颜色值    glShadeModel(GL_FLAT);  //设置着色模式。    uquadric = gluNewQuadric();}int main(int argc, char *argv[]){     glutInit(&argc, argv);     /*     GLUT_RGB:指定 RGB 颜色模式的窗口     GLUT_SINGLE:指定单缓存窗口     */     glutInitDisplayMode(GLUT_RGB | GLUT_SINGLE);     glutInitWindowPosition(100, 100);     glutInitWindowSize(500, 500);     glutCreateWindow("太空漂浮");     init();     //glutDisplayFunc(display);	 glutDisplayFunc(renderScene);     glutIdleFunc(renderScene);     //glutReshapeFunc(reshape);     glutMainLoop();     return 0;}
   

附上几张运行图片：